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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 865 · 40 sums
TalentJR

The method (Count on): Start with the bigger number. Count on the smaller number, one finger at a time. For a missing number (8 + ? = 15), count on from 8 up to 15, or take away: 15 − 8.

NameDateTime takenScore ___ / 40
  1. 1.? + 16 = 19
  2. 2.2 + ? = 14
  3. 3.? + 2 = 17
  4. 4.Meera has 4 marbles and gets 4 marbles more. How many marbles does Meera have now?
  5. 5.Ishaan has 5 bananas and gets 3 bananas more. How many bananas does Ishaan have now?
  6. 6.10 + 8 =
  7. 7.8 + 2 + 6 =
  8. 8.There are 10 blue kites and 2 white kites. How many kites are there in all?
  9. 9.There are 4 white balloons and 6 yellow balloons. How many balloons are there in all?
  10. 10.Zoya has 7 mangoes and gets 4 mangoes more. How many mangoes does Zoya have now?
  11. 11.There are 7 red balls and 9 pink balls. How many balls are there in all?
  12. 12.6 + 2 =
  13. 13.5 + 8 + 2 =
  14. 14.There are 8 yellow kites and 9 pink kites. How many kites are there in all?
  15. 15.8 + 3 + 9 =
  16. 16.There are 5 pink balls and 7 yellow balls. How many balls are there in all?
  17. 17.4 + ? = 7
  18. 18.3 + 2 + 4 =
  19. 19.There are 2 red balls and 15 white balls. How many balls are there in all?
  20. 20.Meera has 13 balloons and gets 1 balloon more. How many balloons does Meera have now?
  21. 21.There are 7 white beads and 3 pink beads. How many beads are there in all?
  22. 22.1 + ? = 3
  23. 23.2 + 6 + 11 =
  24. 24.8 + 8 =
  25. 25.1 + ? = 5
  26. 26.3 + 2 + 11 =
  27. 27.13 + 1 =
  28. 28.There are 10 white flowers and 9 green flowers. How many flowers are there in all?
  29. 29.6 + 8 + 5 =
  30. 30.4 + 6 + 10 =
  31. 31.Rohan has 13 bananas and gets 3 bananas more. How many bananas does Rohan have now?
  32. 32.1 + 2 + 14 =
  33. 33.7 + 1 + 4 =
  34. 34.There are 10 blue balloons and 5 red balloons. How many balloons are there in all?
  35. 35.7 + 4 + 8 =
  36. 36.1 + 10 =
  37. 37.Rahul has 3 shells and gets 2 shells more. How many shells does Rahul have now?
  38. 38.There are 11 white crayons and 9 green crayons. How many crayons are there in all?
  39. 39.3 + 17 =
  40. 40.There are 8 green crayons and 12 red crayons. How many crayons are there in all?

Answer key

  1. 3
  2. 12
  3. 15
  4. 8
  5. 8
  6. 18
  7. 16
  8. 12
  9. 10
  10. 11
  11. 16
  12. 8
  13. 15
  14. 17
  15. 20
  16. 12
  17. 3
  18. 9
  19. 17
  20. 14
  21. 10
  22. 2
  23. 19
  24. 16
  25. 4
  26. 16
  27. 14
  28. 19
  29. 19
  30. 20
  31. 16
  32. 17
  33. 12
  34. 15
  35. 19
  36. 11
  37. 5
  38. 20
  39. 20
  40. 20

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